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2 years ago

The boxplot displays the scores from an economics chapter test. identify the second quartile.

Mathematics

2 answers:

netineya [11]2 years ago

5 0

Answer:

Step-by-step explanation:

The middle line is the median, then from left to right the lines are the first, second, third and fourth quartile.

Oksana_A [137]2 years ago

5 0

Answer:

Option C) 80 is the median score.

Step-by-step explanation:

We are given the following information :

The second quartile also known as the median of the data divides the range in the middle and has 50 percent of the data below it that is divided the data into two equal parts.
A box and whisker plot also known as box plot tells the five-number summary of a set of data.
The five-number summary is the minimum, first quartile, median, third quartile, and maximum of the data set.
In a box plot, a box is drawn from the first quartile to the third quartile. A vertical line in the box represents the median of data.

In the given box plot:

The end point of box represents the first and the third quartile. The line in the box is the median of data set.

Hence, the second quartile or median is 80.

Option C) 80 is the median score.

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The perimeter of a rectangular field is 26 yards. The length is 4 more yards than twice the width. Find the length and width of

solong [7]

The formula for perimeter is P = 2length + 2width (P = 2L + 2W)

You know that the length is 4 more yards then twice the width. In equation form this would be:

length = 4 + 2w

Plug what you know into the perimeter formula:

26 = 2(4 + 2w) + 2w

First you must distribute the 2 to the numbers inside the parentheses, which would be 4 and 2w...

26 = (2 * 4) + (2 * 2w) + 2w

26 = 8 + 4w + 2w

Now you must combine like terms. This means that first numbers with the same variables (w) must be combined...

26 = 8 + 4w + 2w

4w + 2w = 6w

26 = 8 + 6w

Now bring 8 to the left side by subtracting 8 to both sides (what you do on one side you must do to the other). Since 8 is being added on the right side, subtraction (the opposite of addition) will cancel it out (make it zero) from the right side and bring it over to the left side.

26 - 8 = 8 - 8 + 6w

18 = 0 + 6w

18 = 6w

To isolate w divide 6 to both sides

18 / 6 = 6w / 6

w = 3

We know that the width is 3 ft

Now you must find the length. To do this plug 3 where you see w in the equation:

length = 4 + 2w

l = 4 + 2(3)

l = 4 + 6

l = 10

We know that length is 10 ft

Letter B. is the correct answer

Hope this helped!

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3 years ago

The plate is rotated 90° about the origin in the counterclockwise direction. In the rotated trapezoid, what are the coordinates

Crazy boy [7]

You haven't provided the coordinates of the original trapezium, therefore, I can only help with the concept.

From the givens, we can know that the rotation was 90° counter-clockwise about the origin.

<u>The rule for this rotation is:</u>

(x , y) ..............> (-y , x)

This means that to get the points of the rotated image, negate the y-value then exchange it with the x-value

<u>Examples:</u>

(1 , 3) rotated 90° counter-clockwise about the origin will give (-3 , 1)

(-2 , 4) rotated 90° counter-clockwise about the origin will give (-4 , -2)

(1 , -2) rotated 90° counter-clockwise about the origin will give (2 , 1)

(-3 , -5) rotated 90° counter-clockwise about the origin will give (5 , -3)

Hope this helps :)

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3 years ago

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Asked and answered elsewhere.
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3 years ago

Use the Quadratic Formula to solve the equation. (Enter your answers as a comma-separated list.) 13x^2 +1 = -10

12345 [234]

Step-by-step explanation:

The given quadratic equation is :

$13x^2 +1 = -10x\\\\or\\\\13x^2+10x+1=0$

The formula to solve a quadratic equation is :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

Put a = 13, b = 10 and c = 1

So,

$x=\dfrac{-10\pm \sqrt{10^2-4(13)(1)} }{2(13)}\\\\x=-0.118, -0.651$

Hence, this is the required solution.

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Answer:

Step-by-step explanation:

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1 year ago

The boxplot displays the scores from an economics chapter test. identify the second quartile.​

The boxplot displays the scores from an economics chapter test. identify the second quartile.